초록 ▼

A fence gate opener with fluid gravity closure assembly having 1) a main closure gate assembly with a main gate assembly; 2) a main support base assembly operable to be connected to a ground support surface and having the main gate assembly pivotally connected thereto; 3) a fluid gravity closure ass

A fence gate opener with fluid gravity closure assembly having 1) a main closure gate assembly with a main gate assembly; 2) a main support base assembly operable to be connected to a ground support surface and having the main gate assembly pivotally connected thereto; 3) a fluid gravity closure assembly operably connected to the main support base assembly and the main gate assembly for pivotal movement therewith; and 4) a gate actuator treadle assembly operably connected to the main support base assembly and the main gate assembly to cause pivotal movement thereof from the opened to the closed conditions. The main closure gate assembly includes a counterbalance weight assembly being rotatable with the main gate assembly on a pivot shaft member from opened to closed conditions of the main gate assembly. The main support base assembly includes a support frame assembly having a pivotal gate support assembly connected thereto. The fluid gravity closure assembly includes a weight transfer fluid tank assembly having a sealed fluid flow system with three tank members operable to 1) have fluid flow from a first tank member to a second tank member in the opened condition; and 2) have controlled fluid flow from the second tank member to a third tank member and back to the second tank member to provide a controlled movement of the main gate assembly from the opened to the closed conditions. The gate actuator treadle assembly can be a mechanical actuator treadle assembly or a hydraulic actuator treadle assembly which can be used on irregular terrain ground support surfaces.

대표청구항 ▼

[ We claim:] [1.] A fence gate opener with fluid gravity closure assembly, comprising:a) a main closure gate assembly includes a main gate assembly movable from a horizontal gate closed position to an upper gate opened position;b) said main gate assembly pivotally connected to a main support base as

[ We claim:] [1.] A fence gate opener with fluid gravity closure assembly, comprising:a) a main closure gate assembly includes a main gate assembly movable from a horizontal gate closed position to an upper gate opened position;b) said main gate assembly pivotally connected to a main support base assembly;c) a fluid gravity closure assembly connected to and movable with said main gate assembly;d) actuator means operably connected to said main gate assembly;e) said actuator means engaged by a portion of a vehicle operable to move said main gate assembly from a closed to an opened position;f) said fluid gravity closure assembly operable when said main gate assembly is in the opened position to cause fluid flow therein to cause said main gate assembly to move to the closed position;g) said fluid gravity closure assembly includes a weight transfer fluid tank assembly having a fluid therein;h) said weight transfer fluid tank assembly includes 1) a main storage tank member containing said fluid when said main gate assembly is in the closed position; and 2) a main holding tank member containing said fluid when said main gate assembly is in the opened position;i) said main holding tank member spaced from the main storage tank member mid connected thereto by a storage tank transfer tube operable to transfer said fluid therebetween; andj) said weight transfer fluid tank assembly includes a main auxiliary tank member operably connected to said main storage tank member and said main holding tank member to permit said fluid to move in a controlled manner through a control means from said main holding tank member to said main auxiliary tank member to start a controlled movement of said main gate assembly from the opened to the closed position.